Question

I have a pair of RUT240s running RUT2_R_00.07.02.7 firmware

There is a GRE tunnel that runs between them, and I can successfully ping everywhere one would expect.

What is needed to get multicast traffic generated at each end to transfer to the other end?

Thanks in advance,

Roche

Comments

I have tried adding a route using the CLI:

ip route add 224.9.9.9/4 dev gre4-XXX

and it does appear in the routing table, but multicast traffic does not traverse the tunnel...

Answer 1

Hello,

For multicast to be possible, an additional package might be necessary called igmpproxy. You should be able to download it via Services -> Package manager from the WebUI. A new section in the Services menu should appear afterwards.

I'm not particularly familiar with the package, thus, hopefully, following links will help with the configuration:

• https://wiki.teltonika-networks.com/wikibase/index.php?title=RUT241_IGMP_Proxy&mobileaction=toggle_view_desktop
• https://openwrt.org/docs/guide-user/network/wan/udp_multicast
• https://stackoverflow.com/questions/34756589/openwrt-allow-multicast-traffic

Best regards,